Below is a list of Youngsville LA zip codes. For your research we have also included Youngsville Area Code, Time Zone, UTC and the local Lafayette County FIPS Code. Each Youngsville Louisiana zip code has a center Longitude / Latitude point (the Youngsville center is -91.990501403809 / 30.100099563599). For your convenience we have also indicated if that zip code in Youngsville observes Daylight Savings time.